Name: Soul Electronics Flex
Brand: Soul

Technical Specifications of Soul Electronics Flex

Overall score

5.0

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Popularity

What it is: An indicator based on the number of reviews received by the headphones.

When it matters: When you prefer headphones that have already been chosen and reviewed by many other users.

Sound

4.0

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Active noise cancellation (ANC)

What it is: Reduces background noise using active technology

When it matters: When blocking office, travel, or aircraft noise is a priority.

Importance: HIGH

Driver type

What it is: Type of speaker driver technology used

When it matters: When the underlying sound character and driver technology matter to you.

Importance: MEDIUM

dynamic

Driver size

What it is: Diameter of the speaker driver unit

When it matters: When you want extra hardware context behind how the headphones may handle bass weight, scale, or overall presentation.

Importance: MEDIUM

Number of drivers

What it is: Total number of speaker drivers per earcup

When it matters: When multi-driver designs are part of your buying criteria.

Importance: LOW

Lowest frequency

What it is: Lowest audio frequency the headphones can reproduce

When it matters: When deeper bass extension matters for your music or movie listening.

Importance: MEDIUM

Good value: <=10 Hz

Calls & Controls

7.4

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Noise-canceling microphone

What it is: Built-in microphone reduces background noise during calls

When it matters: When you take calls in busy spaces and want your voice to stay clearer.

Importance: MEDIUM

Can be used as a headset

What it is: Shows whether the headphones can handle voice chat and calls in addition to normal audio playback.

When it matters: When one pair needs to cover music, calls, meetings, and gaming chat.

Importance: MEDIUM

Number of microphones

What it is: Total number of built-in microphones

When it matters: When call pickup quality and beamforming support matter to you.

Importance: LOW

Good value: >=2

Boom microphone

What it is: Includes detachable boom microphone for voice clarity

When it matters: When you need stronger voice clarity for gaming, streaming, or work calls.

Importance: LOW

Microphone SNR

What it is: Signal-to-noise ratio of the microphone

When it matters: When call clarity matters and you want your voice picked up more cleanly instead of buried in background hiss.

Importance: LOW

Good value: >80 dB

Connectivity

4.0

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Connectivity

What it is: Available connection methods (wired, wireless, Bluetooth, etc.)

When it matters: When the headphones need to match how you listen across wired and wireless devices.

Importance: HIGH

Bluetooth version

What it is: Version of Bluetooth technology supported

When it matters: When wireless stability, efficiency, and feature support matter more than treating Bluetooth as a box-check spec.

Importance: MEDIUM

Good value: >=5.0

N/A

Maximum Bluetooth range

What it is: Maximum wireless operating distance from source device

When it matters: When you move around rooms and want fewer dropouts from your source device.

Importance: LOW

Good value: >=10 m

N/A

Audio latency

What it is: Delay between audio and video in wireless mode

When it matters: When you watch video or play games and need sound to stay in sync.

Importance: HIGH

Good value: <60 ms

Multipoint support

What it is: Supports simultaneous connections to multiple devices

When it matters: When you switch often between a phone and a laptop during the day.

Importance: MEDIUM

N/A

Features

4.1

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Ambient sound mode

What it is: Allows external sounds to pass through for awareness

When it matters: When you need to stay aware of traffic, voices, or announcements.

Importance: MEDIUM

N/A

EQ support

What it is: Allows customization of sound profile via equalizer

When it matters: When the stock tuning is not enough and you want to shape bass, mids, or treble to match your taste.

Importance: MEDIUM

Companion app

What it is: Dedicated mobile app for customization and updates

When it matters: When software customization, updates, and extra controls matter.

Importance: MEDIUM

N/A

Adjustable ANC levels

What it is: Allows adjustment of noise cancellation intensity levels

When it matters: When you move between quiet rooms, offices, streets, and public transport and do not want one ANC setting for every situation.

Importance: LOW

Good value: >=4

N/A

Voice assistant support

What it is: Compatible with voice assistants like Siri, Alexa, or Google Assistant

When it matters: When hands-free control is part of your daily routine.

Importance: LOW

Battery

8.2

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Battery life

What it is: Playback time on a single charge

When it matters: When you commute, travel, or work long shifts and do not want charging breaks to interrupt listening.

Importance: HIGH

Good value: >45 hours

N/A

Battery life with ANC

What it is: Playback time with active noise cancellation enabled

When it matters: When you plan to keep noise cancellation on for most of the day.

Importance: HIGH

Good value: >40 hours

N/A

Charging time

What it is: Time required for a full battery charge

When it matters: When you often need the headphones ready again after short breaks.

Importance: MEDIUM

Good value: <=2 hours

N/A

Quick charge

What it is: Provides quick playback time with short charging period

When it matters: When a short top-up needs to deliver useful playback before you leave.

Importance: MEDIUM

Battery capacity

What it is: Total energy storage of the internal battery

When it matters: When you are estimating how much battery headroom the design may have before relying only on the official runtime claim.

Importance: MEDIUM

Good value: >=720 mAh

Design

8.3

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Brand name

What it is: The manufacturer or brand of the product.

When it matters: When you prefer a specific ecosystem, support network, or design philosophy.

Importance: MEDIUM

Soul

Form factor

What it is: Overall design type of the headphones (over-ear, on-ear, in-ear, etc.)

When it matters: When comfort, portability, and isolation depend on the overall headphone style.

Importance: HIGH

in-ear

Weight

What it is: Total weight of the headphones

When it matters: When long listening sessions make wearing comfort more important.

Importance: MEDIUM

Good value: <150 g

Acoustic design

What it is: Type of acoustic design (open-back, closed-back, semi-open)

When it matters: When you need the right balance of isolation, leakage, and soundstage.

Importance: HIGH

closed-back

Clamp force

What it is: Amount of clamping pressure applied to the head

When it matters: When comfort and fit security matter during long sessions.

Importance: MEDIUM

N/A

Soul Electronics Flex vs the average headphone

Why is Soul Electronics Flex better than the average headphone?

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91.7% lower weight
Soul Electronics Flex is lighter than the average headphone (18 g vs 218 g). The average pair of headphones weighs 218 g.
What it is: Total weight of the headphones
When it matters: When long listening sessions make wearing comfort more important.
Importance: MEDIUM
Good value: <150 g
Soul Electronics Flex is lighter than the average headphone (18 g vs 218 g). The average pair of headphones weighs 218 g.18 g vs 218 g
Clear call microphone
Soul Electronics Flex offers a clear call microphone, while the average headphone does not. 45.6% of headphones support noise-canceling microphones.
What it is: Built-in microphone reduces background noise during calls
When it matters: When you take calls in busy spaces and want your voice to stay clearer.
Importance: MEDIUM
Soul Electronics Flex offers a clear call microphone, while the average headphone does not. 45.6% of headphones support noise-canceling microphones.
Direct 3.5 mm plug
Soul Electronics Flex includes a direct 3.5 mm plug, the average headphone does not. 38.8% of headphones have a 3.5 mm male connector.
What it is: Shows whether the headphones end in a built-in 3.5 mm male plug instead of relying on a separate detachable cable.
When it matters: When direct wired compatibility with older devices or adapters matters.
Importance: MEDIUM
Soul Electronics Flex includes a direct 3.5 mm plug, the average headphone does not. 38.8% of headphones have a 3.5 mm male connector.
In-line controls
Soul Electronics Flex includes in-line controls, the average headphone does not. 36.4% of headphones support in-line controls.
What it is: Controls available on in-line remote of wired cable
When it matters: When your wired setup depends on cable-mounted buttons or call controls.
Importance: LOW
Soul Electronics Flex includes in-line controls, the average headphone does not. 36.4% of headphones support in-line controls.
Water resistance
Soul Electronics Flex is water resistant, the average headphone is not. 20.2% of headphones are water resistant.
IPX5
What it is: Protection level against water exposure
When it matters: When workouts, commuting, or outdoor use expose the headphones to moisture.
Importance: MEDIUM
Soul Electronics Flex is water resistant, the average headphone is not. 20.2% of headphones are water resistant.
Better IP rating
Soul Electronics Flex has a better IP rating than the average headphone (IPX5 vs none). The average headphones have an IP rating of none.
What it is: Level of dust and water protection rating
When it matters: When sweat, rain, or dust exposure is part of how you use the headphones.
Importance: MEDIUM
Soul Electronics Flex has a better IP rating than the average headphone (IPX5 vs none). The average headphones have an IP rating of none.IPX5 vs none
91.7% lower weight
Soul Electronics Flex is lighter than the average headphone (18 g vs 218 g). The average pair of headphones weighs 218 g.
Water resistance
Soul Electronics Flex is water resistant, the average headphone is not. 20.2% of headphones are water resistant.
Better IP rating
Soul Electronics Flex has a better IP rating than the average headphone (IPX5 vs none). The average headphones have an IP rating of none.
Direct 3.5 mm plug
Soul Electronics Flex includes a direct 3.5 mm plug, the average headphone does not. 38.8% of headphones have a 3.5 mm male connector.
Clear call microphone
Soul Electronics Flex offers a clear call microphone, while the average headphone does not. 45.6% of headphones support noise-canceling microphones.
In-line controls
Soul Electronics Flex includes in-line controls, the average headphone does not. 36.4% of headphones support in-line controls.

Why is Soul Electronics Flex worse than the average headphone?

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Fixed cable
Soul Electronics Flex has a fixed cable, while the average headphone has a detachable one. 62% of headphones have a detachable cable.
31 mm smaller driver size
Soul Electronics Flex has smaller driver size than the average headphone (9 mm vs 40 mm). The average headphones use a driver size of 40 mm.
10 dB/mW lower sensitivity
Soul Electronics Flex has a lower sensitivity than the average headphone (92 dB/mW vs 102 dB/mW). The average headphones have sensitivity of 102 dB/mW.
2 Hz weaker bass extension
Soul Electronics Flex has a higher lowest frequency than the average headphone (20 Hz vs 18 Hz). The average headphones reach a lowest frequency of 18 Hz.
122.5 ms higher audio latency
Soul Electronics Flex has a higher audio latency than the average headphone (250 ms vs 127.5 ms). The average headphones have audio latency of 127.5 ms.
31 mm smaller driver size
Soul Electronics Flex has smaller driver size than the average headphone (9 mm vs 40 mm). The average headphones use a driver size of 40 mm.
What it is: Diameter of the speaker driver unit
When it matters: When you want extra hardware context behind how the headphones may handle bass weight, scale, or overall presentation.
Importance: MEDIUM
Soul Electronics Flex has smaller driver size than the average headphone (9 mm vs 40 mm). The average headphones use a driver size of 40 mm.9 mm vs 40 mm
122.5 ms higher audio latency
Soul Electronics Flex has a higher audio latency than the average headphone (250 ms vs 127.5 ms). The average headphones have audio latency of 127.5 ms.
What it is: Delay between audio and video in wireless mode
When it matters: When you watch video or play games and need sound to stay in sync.
Importance: HIGH
Good value: <60 ms
Soul Electronics Flex has a higher audio latency than the average headphone (250 ms vs 127.5 ms). The average headphones have audio latency of 127.5 ms.250 ms vs 127.5 ms
Fixed cable
Soul Electronics Flex has a fixed cable, while the average headphone has a detachable one. 62% of headphones have a detachable cable.
What it is: Cable can be removed or replaced
When it matters: When you care about easier cable replacement, simpler storage, or the option to swap to shorter, longer, or upgraded leads.
Importance: MEDIUM
Soul Electronics Flex has a fixed cable, while the average headphone has a detachable one. 62% of headphones have a detachable cable.
10 dB/mW lower sensitivity
Soul Electronics Flex has a lower sensitivity than the average headphone (92 dB/mW vs 102 dB/mW). The average headphones have sensitivity of 102 dB/mW.
What it is: Sound pressure output level per unit of input power
When it matters: When you plan to use weaker sources like phones, handhelds, or entry-level dongles and still want enough volume.
Importance: MEDIUM
Good value: >=106 dB/mW
Soul Electronics Flex has a lower sensitivity than the average headphone (92 dB/mW vs 102 dB/mW). The average headphones have sensitivity of 102 dB/mW.92 dB/mW vs 102 dB/mW
2 Hz weaker bass extension
Soul Electronics Flex has a higher lowest frequency than the average headphone (20 Hz vs 18 Hz). The average headphones reach a lowest frequency of 18 Hz.
What it is: Lowest audio frequency the headphones can reproduce
When it matters: When deeper bass extension matters for your music or movie listening.
Importance: MEDIUM
Good value: <=10 Hz
Soul Electronics Flex has a higher lowest frequency than the average headphone (20 Hz vs 18 Hz). The average headphones reach a lowest frequency of 18 Hz.20 Hz vs 18 Hz
38.2% lower user score
Soul Electronics Flex has a lower user score than the average headphone (5.79 vs 8.000).
What it is: A rating that combines user reviews and the total number of reviews received by the headphones.
When it matters: When you want to understand how headphones perform in real listening and how reliable they are in terms of comfort, audio quality, battery life, and long-term use.
Soul Electronics Flex has a lower user score than the average headphone (5.79 vs 8.000).5.79 vs 8
2.29x less popular
Soul Electronics Flex is less popular than the average headphone (2.03 vs 4.646).
What it is: An indicator based on the number of reviews received by the headphones.
When it matters: When you prefer headphones that have already been chosen and reviewed by many other users.
Soul Electronics Flex is less popular than the average headphone (2.03 vs 4.646).2.03 vs 4.65
3.5% worse value for money
Soul Electronics Flex has worse value for money than the average headphone (6.51 vs 6.736).
What it is: An indicator that combines the headphones' overall rating with their cost.
When it matters: When you are looking for headphones that offer a strong balance of performance, features, and price.
Soul Electronics Flex has worse value for money than the average headphone (6.51 vs 6.736).6.51 vs 6.74

Third-party reviews

United Kingdom

3.7

14 Reviews

United States

(Reviews last updated: June 2026)

What customers like about Soul Electronics Flex?

Secure over-ear fit that stays in place during intense workouts
IPX5 waterproof rating makes them sweat and water-resistant
Energetic sound signature with deep, boosted bass suited for hip-hop and dance music
Lightweight design (approx. 18g) and includes a tangle-free cable
Good call quality with a microphone that effectively rejects background noise
Includes helpful accessories like a travel pouch and multiple ear tip sizes

What customers dislike about Soul Electronics Flex?

The over-ear loops can be difficult to put on or remove quickly
Bass can occasionally be overpowering for genres like acoustic jazz or orchestral music
Some users report an 'odd' or inconsistent sound signature depending on the track
Microphone reliability issues reported by some long-term users
Over-ear hooks may not fit all ear shapes comfortably

Expert reviews

tomsguide.com

17/04/2014

Soul Flex Review (Sport Earbuds)

The Soul Electronics Flex ($69) is a pair of water-resistant, wired sport earbuds tailored for high-intensity workouts and athletic use. They feature soft rubber earloops with an antibacterial coating designed to wrap securely over the ears, ensuring they stay firmly in place regardless of heavy head movement. Built with flat, anti-tangle blue cabling, the headphones include an...Read more

Soul Flex Review (German version available via site settings)

The Soul Flex sport earbuds ($69) are a great buy for active listeners who want high-quality sound that stays secure during workouts. These water-resistant headphones feature soft rubber loops that wrap comfortably over the ears and block out gym noises effectively. They come with an anti-tangle flat cable, a three-button iOS controller, and an IPX5 rating that easily survives water...Read more

Soul Electronics Flex Review | 93 Data compared

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Technical Specifications of Soul Electronics Flex

Soul Electronics Flex vs the average headphone

Why is Soul Electronics Flex better than the average headphone?

Why is Soul Electronics Flex worse than the average headphone?

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Third-party reviews

What customers like about Soul Electronics Flex?

What customers dislike about Soul Electronics Flex?

Expert reviews

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